Multigene methylation analysis of Wilms' tumour and adult renal cell carcinoma

被引:83
作者
Morris, MR
Hesson, LB
Wagner, KJ
Morgan, NV
Astuti, D
Lees, RD
Cooper, WN
Lee, JA
Gentle, D
Macdonald, F
Kishida, T
Grundy, R
Yao, M
Latif, F
Maher, ER [1 ]
机构
[1] Univ Birmingham, Sch Med, Dept Paediat & Child Hlth, Sect Med & Mol Genet, Birmingham B15 2TT, W Midlands, England
[2] Univ Birmingham, Canc Res UK Renal Mol Oncol Grp, Birmingham B15 2TT, W Midlands, England
[3] Birmingham Womens Hosp, W Midlands Reg Genet Serv, Birmingham B15 2TG, W Midlands, England
[4] Birmingham Childrens Hosp, Dept Paediat Oncol, Birmingham, W Midlands, England
[5] Yokohama City Univ, Sch Med, Yokohama, Kanagawa 232, Japan
关键词
Wilms' tumour; renal cell carcimona; methylation; profile; epigenetics;
D O I
10.1038/sj.onc.1206914
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
To investigate the role of epigenetic gene silencing in the pathogenesis of Wilms' tumour and renal cell carcinoma (RCC), we determined their methylation pro. le using a candidate gene approach. Thus, 40 Wilms' tumours and up to 49 adult RCC were analysed by methylation-specific PCR for promoter methylation at CASP8, CDH1, CDH13, DAPK, MGMT, NORE1A, p14(ARF) and RARB2 in primary Wilms' tumours and CASP8, CDH1, CDH13, CRBP1, DAPK, MGMT, MT1G, NORE1A, p16(INK4a), SDHB and RARB2 in primary RCC. Both tumour sample sets had previously been analysed for RASSF1A promoter methylation, and p16(INK4a) methylation results were also available for the Wilms' tumour samples. Wilms' tumours demonstrated a high incidence of methylation at CASP8 (43%) and MGMT (30%), intermediate frequencies at NORE1A (15%), p14(ARF) (15%), p16(INK4a) (10%), DAPK (11%) and CRBP1 (9%), but promoter methylation was rare or absent at RARB2 (0%), CDH13 ( 0%) and CDH1 (3%). No association was detected between methylation of RASSF1A, CASP8 or MGMT in individual tumours. The frequency of MGMT methylation was higher in stage 1 and 2 tumours (50%) than in stage 3 and 4 tumours (17%) but this did not reach statistical significance ( P = 0.06). RCC were most frequently methylated at DAPK (24%), MT1G ( 20%), NORE1A (19%), CDH1 (16%) and MGMT ( 9%) and not or rarely at SDHB (4%), RARB2 ( 0%), p16(INK4a) ( 0%) and CDH13 ( 3%). There were no associations between methylation of RASSF1A, DAPK and CDH1 in individual tumours. Papillary RCC demonstrated a higher frequency of DAPK methylation ( 43%) than clear cell tumours ( 19%) ( P = 0.14). We have demonstrated that de novo promoter methylation is frequent in Wilms' tumour and RCC, and these data enable methylation profiles to be constructed for each tumour type. Thus, combining our results with data published previously, it appears that promoter methylation occurs frequently (greater than or equal to20% of primary tumours) at CASP8, SLIT2 and RASSF1A in Wilms' tumour and at RASSF1A, TIMP3, DAPK, SLIT2, MT1G and GSTP1 in RCC.
引用
收藏
页码:6794 / 6801
页数:8
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